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Materials and Construction

The range of Mho’s scale of hardness is from________________?

August 27, 2021March 11, 2019 by admin
The range of Mho’s scale of hardness is from________________?

A. 1 to 15
B. 1 to 8
C. 1 to10
D. 0 to 10

Categories Materials and Construction Leave a comment

______________ possesses viscoelastic properties?

August 27, 2021March 11, 2019 by admin
______________ possesses viscoelastic properties?

A. Cork
B. Glass
C. Graphite
D. Rubber

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Aluminium storage vessel can be used to store________________?

August 27, 2021March 11, 2019 by admin
Aluminium storage vessel can be used to store________________?

A. Aqua regia
B. Ferrous sulphate
C. Hydrochloric acid (10%)
D. None of these

Categories Materials and Construction Leave a comment

Carbon percentage in medium carbon steel is around__________________?

August 27, 2021March 11, 2019 by admin
Carbon percentage in medium carbon steel is around__________________?

A. 0.1 to 0.35
B. 0.35 to 0.5
C. 0.8 to 1.4
D. 1 to 1. 5

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Which of the following heat treatment processes is used for softening the hardened material ?

August 27, 2021March 11, 2019 by admin
Which of the following heat treatment processes is used for softening the hardened material ?

A. Normalising
B. Tempering
C. Annealing
D. None of these

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______________ is never shipped in glass carboys?

August 27, 2021March 11, 2019 by admin
______________ is never shipped in glass carboys?

A. Ammonia
B. Acetic acid
C. Phenol
D. Formaldehyde

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Silico-manganese steels (containing 0.7% Mn, 0.5% C and 2% Si)___________________?

August 27, 2021March 11, 2019 by admin
Silico-manganese steels (containing 0.7% Mn, 0.5% C and 2% Si)___________________?

A. Do not require heat treatment for any of its applications
B. Are used for leaf and coiled springs
C. Do not have good resilience properties
D. Is tempered at 850°C

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The fermenter used for the production of ethyl alcohol from molasses is made of________________?

August 27, 2021March 11, 2019 by admin
The fermenter used for the production of ethyl alcohol from molasses is made of________________?

A. Wood
B. Concrete
C. Copper bearing steel
D. Porcelain

Categories Materials and Construction Leave a comment

Lead_________________?

August 27, 2021March 11, 2019 by admin
Lead_________________?

A. Is the hardest metal in common use
B. Is the lightest metal in common use
C. Cannot be scratched by finger nails
D. Cannot be work hardened

Categories Materials and Construction Leave a comment

Which of the following materials may prove unsuitable for handling acetic acid (glacial & anhydrous) at 40°C ?

August 27, 2021March 11, 2019 by admin
Which of the following materials may prove unsuitable for handling acetic acid (glacial & anhydrous) at 40°C ?

A. Silicone rubber, teflon, porcelain and wood
B. Nickel, monel, stainless steel and graphite
C. Aluminium, copper, high silicon iron
D. Brass, cast iron, mild steel and tin

Categories Materials and Construction Leave a comment
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